is DHCPD installed, maybe (as root) just run ntsysv and have it start at boot time

this /etc/dhcpd.conf file assigns static IP numbers if you have a matching MAC address, A MAC address is a unique 'number' given to the NIC. The start of the 'number' is based on the manufacturer, if you don't have a sticker on the card, attempt to load the rom image from eprom or floppy and see what it reports. (see client setup)

It's easiest to allow anybody and anything to run services and process on your computer, but one day you will be sorry. You restrict these by your /etc/hosts.deny and specifically restore rights by /etc/hosts.allow, indicative examples :